Improvement in chains for hanging sash



that@ gaat MICHAEL M-AGRATH,

OF NEW YORK, N. Y.

Letters Patent N0. 112,938, dated March 2l, 1871.

IMPROVE-MENT IN CHAINS FOR HANGING SASH.

The Schedule referred to in these Letters Patent and making part of thesame.'

To all whom it may concern l Be it known that I, MICHAEL MAGRATH, of NewYork, in the county of New York and State of New York, have inventedcertain Improvements in Devices for Hanging Sash, of which the followingis a specilication, reference being had to the accompanying drawing.

My invention relates to the novel construction of chains for hangingsash.

Figure l is a vertical section of a portion of a sash and frame with myimprovements applied;

Figure 21s a view of a portion of the chain and the stop used forsecuring it to the sash; and

Figure 3 is a transverse section of the chain and a portion of a pulley.y

In the ordinary method of' hanging sash by means of cords and pulleys,there has always been more or less trouble, owing to the fact that thecords soon fray or wear out, thus necessitating their renewal, which isa diiiicult operation.

To obviate this diiiculty and provide amore dura'- ble and etiicientmeans of hanging sash, I propose to use chains for this purpose; and, inorder to adapt chains to this purpose or use, I make them in thefollowing manuer:

I strike or punch out of sheet or plate metal a series of blanks orshort pieces, a and c', which have holes at each end and also at theircenter.

The pieces c, which I place at the center between the pieces a', aremade considerably wider than the others, as shown in iig. 3, therebyimparting to the body ot' the chain when finished a rounded outline orsurface, by which means it is adapted to run in the groove of theordinary pulley, as: shown in fig. 3.

A link is composed ofthree of these blanks, arranged as there shown, andthe links thus formed are connected to each other by two narrow blanksor pieces, n, to which they are connected by rivets in the usual manner,and as shown in figs. 1 and 2.

It is however, obvious that the links may be composed of agreatcr numberof blanks or pieces, care being taken to make them of proper widths, soas to preserve the rounded outline or form, as already described.

The object `of making these links with the holes c through their centeris that the chain may cut oli any required length, and be readilyfastened at one'end to the weight, and at the other end to the sash, bysimply inserting a pin or rivet in the hole.

In order to attach the chain to the sash in a secure manner and so thatit can be readily detached when necessary, I form in thel side of thesash E a groove or recess for the chain to lie in, as represented infig.

l, this recess terminating at its lowerfend in a' verti-y cal hole, b,which extends-from the open groove down' to a hole, G, bored into theedge of the sash at right angles thereto, as shown in iig. I. Y

I then provide a metal plug or stop, F, circular in form, and of a sizeto dt in the hole G, this stop F having a recess in or across its faceon one side of sui'- icient width and depth to receive the links, asrepresented in iig. 2.

I then insert the free end of the chain through the hole b and outthrough the hole G in the sash E, and secure the plug or stop F thereto,by passing a pin or rivet d through the ears or projections on the rearside of the plug, and through the hole e in the link, as represented ing. 2, after which the chain is drawn up tight, thus drawing the Iplugorstop E into the hole G, as represented in fig. 1.

A weight, D, is attached to the opposite end of the chain by means of ahook or link, f, secured to the link by a pin or rivet in a similarmanner.

Vhen thus constructed and arranged it will-be foundv that the chain willoperate with as much ease and as free from noise as a cord, and by thismeans I produce a very durable and elicient device for hanging sash,andone that is specially adapted to heavy w'indows.

Having thus described my invention,

l. A chain, having its links composed of flat strips or pieces, ofdifferent widths, arranged substantially as described, whereby the chainhas a rounded outline or surface to adapt it to run in a circulargroove, substantially as described.'

